I am an unpaid user of GoogleDrive, so maximum I will have just 15GB on there and my laptop has enough space if I have to cache my entire Google Drive. So, I can choose to let the --vfs-cache-max-size be off/"ulimited" (default). And with "forever" --vfs-cache-max-age I think I would actually make the mount behave more like a local copy (like using Google Drive Client on MacOs/Windows with local copy option) provided I have accessed all files at least once at some point within the "forever" time-frame. I actually prefer the behaviour of the Google Drive client on MacOs/Windows where I don't have to rely on network connection to access my files if I am on the road, which is the case with a mount. What do you think?